flutter 3.0 upgrade 후 수정 사항들1
dart list 선언 부분 The name 'FlatButton' isn't a class. **Old Widget change to New Widget FlatButton => TextButton RaisedButton => ElevatedButton OutlineButton => OutlinedButton** 에러메세지 The operator '[]' isn't defined for the type 'Object'. builder: (context , snapshot) { if (snapshot. hasData ) { if ( snapshot. data ?[ 'obj' ] == null ) { _naviButtonText = ' 등록 ' ; } else { _naviButtonText = ' 확인 ' ; Map temp = snapshot. data [ 'obj' ] ; temp.forEach((key , value) { _regiInfo [key] = value ; }) ; builder: (context , snapshot) { if (snapshot. hasData ) { if ( (snapshot. data as Map)[ 'obj' ] == null ) { * 삼항식 변경 기존 boolname ? aaaa:bbbb; 변경 boolname==true ? aaaa:bbbb; The return type 'WebView' isn't a 'Widget', as required by the closure's context. Open documentation Undefined name 'Javas...